Gas-burner.



E. G. VAN ZANDT.

GAS BURNER. I APPLIOATION FILED DEC. 14, 1909. RENEWED APR. 19, 1912.1,045,468.

Patented Nov. 26, 1912.

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E.'G. VAN ZANDT. GAS BURNER. APPLICATION FILED mm; 14, 1909. RENEWEDAPR. 19, 1912.

1 045, 168, Patented Nov. 26, 1912.

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EDWIN G. VAN ZANDT, OF ST. LOUIS, MISSOURI, ASSIGNOR T0 VAN ZANDT GASAPPLIANCE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

GAS-BURNER.

Specification of Iietters Patent.

Patented Nov. 26, 1912.

Application filed December 14, 1909, Serial No. 533,052. Renewed April19, 1912. Serial No. 691,832.

To all whom it may concern." i

Be it known that I, EDWIN G. VAN ZAND'I, a citizen of the United States,and resident of the city of St. Louis and State of Missouri, haveinvented certain new and useful Improvements in Gas-Burners, of whichthe following is a specification.

This invention relates to gas-burners and has for its object to providean improved gas-burner by means of which the gas may be almost entirelyburned, and the products of combustion thereof subjected to heat and airtreatment in such a manner that any combustible gases therein, or formedthereby, are also completely consumed. The nature of the inventionconsists in a shell or container over an initial burner, which shell orcontainer has a closed top and gathers the products of combustion of theinitial burning. The thus collected products are subjected to thefurther heat of the initial burner, until the shell or container isfilled, when the products of combustion of the initial burner flow outof the bottom of the shell.

The invention consists further in such a shell or container and acylindrical rim, the

.rim being spaced apart from the shell and slightly longer than theshell or container. In the accompanying drawing, Figure 1 is a plan viewof my improved burner, Fig.

2 is a vertical centralsection taken on line 22 of Fig. 1, and Fig. 3 isa central vertical sectional view showing another embodiment of theinvention. 7

Similar reference characters indicate corresponding parts.

Referring to the drawing, apipe 5 is connected with a suitable source ofgas-supply. and with atburner 7, preferably of the Bunsen type with anair and gas mixer 6 as is well known.

A shell or contalner 8, consisting of a cylindrical cup with part 9 andflanges 14,

is placed in inverted position over the initial burner 7 and gatherstlieproducts of combustion of the initial burner in the interiorthereof. These products of combustion gradually fill the shell orcontainer until, when the same is full, the products flow out of thebottom of the shell or container and in overflowing come in intimatecontact with air. Exterior to, the shell or container 8 is a wall orouter shell 12, spaced a certain distance away from the shell orcontainer 8, so as to permit the passage of the products of combustiontherebetween, suitable struts 11 being provided to secure the rim inplace on the shell or container. The outer shell 12 is longer than theflanges 14 of the shell or container 8 and the extended portion acts toprevent the products of combustion from passing into the atmosphere. Theoverflowing products of combustion pass upwardly through the space 13thus formed between the shell or container 8 and the rim 11, and beingmixed with air and simultaneously heated by the exterior of the heatedshell or container, they finally pass out from the space 13 and areignited at the upper outward edge of the shell or container and upperinner edge of the wall or shell 12 where all the combustible partsthereof are ignited and consumed, and

thereby transferred to useful heat.

It is the collecting, heating, spreading, air-mixing, second heating andigniting of the products of combustion, under control, which enable theburner to operate in such a manner that all combustible gases containedin or formed out of the products of combustion of an initial burning ofa gas may be utilized and an aggregate heat relatively Very high for agiven gas-supply obtained.

In Fig. 3 another embodiment of my invention is shown, which consists ofa burner having the lower end of the shell or container 8 provided withthe inverted U- shapcd cutaway portions 20 forming serrations 21. Theobject of these serrations is to break up the products of combustionflowing out of the shell or container 8 and to spread the same so as tocause as large as possible a surface of the products of combustion to beexposed to the air. The outer shell' 12 is provided with aninwardly-extending flange or rib 22 having an inclined surface 22 placedabove the cut-away portions 20, the object of which is to obstruct theflow of gases and deflect them so as to cause them to flow along theouter face of the shell or container 8, and the shell 12 is furtherprovided near its upper end with an inwardly and upwardly projectingflange or rib 23, the object of which is to deflect the combustiblegases inwardly above the top of the shell orcontainer 8. In thisparticular embodiment the supports 10 are a little higher than thoseshown in Fig. 2 so as to properly support the vessel sufliciently spacedabove the flanges 23.

My invention may be used in connection with heaters for heating rooms,and for various other purposes. One of the particular uses for which itis designed is the heating of culinary vessels and utensils, and forthis purpose the plate 9 is provided with upwardly projecting lugs 10which serve to support the vessel or utensil slightly-spaced above theplate 9 whereby effective contact of the flame is permitted. The flameindicated by the dotted lines 16 is a thin, light blue, almosttransparent flame, and leaves no carbon deposits on the vessel withwhich it comes in contact, and while it burns in the form shown by thedotted lines after the burner is highly heated, the flame spreads overthe entire top of the shell or container. This flame, of a second gas,so to say, aids in imparting heat to the contents of the culinaryvessel, and is indicative of an almost perfect combustion of allcombustible portions or the products of combustion of an initialburning.

I have shown one embodiment of my invention, but I do not wish to limitmyself to the details of the same, since changes may be made thereinwithout departing from the spirit of my invention.

I claim as new:

1. In a gas-burner, an inner shell or container open at the bottom andclosed at the top, an initial burner within said shell, and an outershell, open at the top, spaced from and surrounding said inner shell andextending below the inner shell and terminating substantially at the topof the inner shell. 2. In a gas-burner, an inner shell or container openat the bottom and closed at the top, an initial burner within saidshell, and an outer shell surrounding and spaced from the inner shell,and provided with an in- Wardly extending flange between said shells forretarding the flow of products of combustion therebetween.

8. In a gas-burner, an inner shell or container open at its bottom andclosed at its top, an initial burner within said shell, and an outershell surrounding and spaced from said inner shell and provided near its'top with 'an upwardly and inwardly projecting flange.

4:. In a gas-burner having an initial burner, an inner shell orcontainer having a closed top with closed side walls extendingdownwardly to below the burner, and having an open bottom, said shellbeing placed over the initial burner and adapted to retain the burninggases from the initial burner about the same whereby the egress of saidgases is retarded and the gases caused to burn at the interior of theshell, and an outer shell open at the top and at the bottainer open atthe bottom and closed at the top, aninitial burner within said shell,and an outer shell, open at the top and at the bottom, spaced from andsurrounding "said inner shell and extending below the inner shell andterminating substantially at the top of the inner shell, both of saidshells extending below the initial burner.

6. In a gas-burner, the combination of an inner cylindrical shell orcontainer open at the bottom and having a closed top, an initial burnerwithin said inner-shell, and an outer "cylindrical shell spaced from andsurrounding said inner shell, and extending substantially to the top ofand below the bottom of said inner shell.

7. In a gas-burner, the 'combinationof an inner cylindrical shell-orcontainer open at the bottom and having a closed top, an initial burnerwithin said inner-shell, an outer cylindricalshell spaced from andsurrounding said inner shell, and extending substantially to the top ofand below the bottom of said inner shell, and an inwardly projectingflange on the inner face of the outer shell.

8. In a gas-burner, the combination o-f'an inner cylindrical shell orcontainer open at the bottom and having a closed top, an

initial burner within said inner-shell, an

rounding said inner shell, and extending substantially to the top of andbelow the bottom of said inner shell, and'an inwardly projecting flangeat the top of the inner face of the outer 'shell. I

9. In a gas-burner, the combination of a cylindrical shell or containeropen at the bottom and closed at the top and having serrations at thebottom edge thereof for 're tarding and dividing the flow of products ofcombustion from the shell and an initial burner within said shell.

10. In a gas-burner, the combination of an inner cylindrical shell orcontainer open at the bottom and having a closed top, an initial burnerwithinsaid inner-shell, and an outer cylindrical shell spaced from andsurrounding said inner shell, and extending outer cylindrical shellspaced from and sur- In testimony, that I claim the foregoing roundingsaid inner shell, and extending as my invention, I have signed my namein substantially to the top of and below the presence of two subscribingWitnesses.

bottom of said inner shell, and an inwardly EDWIN G. VAN ZANDT.projecting flange at the top of the inner face Witnesses:

of the outer shell, said inner shell being ser- J 0s. B. WIDEN,

rated at the bottom edge thereof. HERRICK J. GRAY.

Copies of this patent may beobtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

